Solar Radiation Units and Conversion

International system of units

The International System of Units, abbreviated SI (from the French Système International), is the internationally-agreed system of measurement.

Angles: Plane angles are expressed in radian (rad), or degrees, or sexagesimal degrees (degrees, minutes, seconds). Convert from one unit to anotherEnergy: Energy, work, quantity of heat are expressed in Joule (J). It can be expressed by unit of surface: J/m2, J/cm2. Irradiation is the energy received per area. Other units are Wh (Watt hour), calorie, therm, Langley. Convert from unit to anotherPower: Power, radiant flux are expressed in Watt (W). Irradiance is defined as a power received per area; it is expressed in W m-2 (watt per square meter). Convert from unit to anotherPressure :Pressure is expressed in Pascal (Pa). In meteorology, the unit hPa (hecto-Pascal) is commonly used; it is 100 times a Pascal. It replaces the millibar unit and they are equivalent. Another unit is the "atmosphere". Convert from unit to another